It's been a minute since NBC's mutant saga occupied my Monday evenings. The last I can remember, the struggling series found its characters running for their lives as flying Petrelli brother Nathan mandated a APB on all people with talents, which pitted him against Peter and the likes of Matt Parkman, Hiro and Ando, HRG and Claire, and Sylar. Now it seems another threat, perhaps one from the past, arises. The trailer presents this new group as being outcasts of both communities, similar to Stan Lee's the Brotherhood. We'll see if this new development recaptures the same magic as the first, and best, season did with viewers. Two-hour season premiere debuts Sept. 21 @ 8 p.m.